Fill in the words according to the first letters of the words given.
(根据所给单词的第一个字母填入单词。)
（1）You must put your rubbish in the b_______.
（2）Dr.Bethune was a famous d_______.
（3）Before 1979, Shenzhen was a s _______ town
（4）His dad talked on his m _______ phone for a long time last night.
（5）We talk quietly at the library.Sometimes we line up but we never p_______.